Embodiments of the present invention provide a laser surgical system with a basic set of functionality which is remotely controllable to implement an advanced set of functionality. An embodiment utilities commit time values at low granularity levels which are associated with structures in a database system. In an embodiment, the device is configured in such a way as to form a maze from the entrance to an interior of the device. When the channel switching operation is not performed and the stopping of the time shift recording is not performed, the recording on a hard disk is subsequently made. In order to at least reduce noise development due to mass momentum of inertia acting here caused by the centrifugal pendulum, the pendulum flange is received on a rotational part, rotating on an axis of rotation, and a friction clutch is effectively arranged between the pendulum flange and said part. By performing the stoichiometric burn operation after the elapse of the limited time of the rich spike control, the emission control apparatus recovers the NOx storing capability while avoiding deterioration of HC and CO emissions.